Team 2: Sree, Bhargavi, Reshma
Couple of our ideas:
1.Web Based control and Monitoring with Microcontroller:
Connecting to a microcontroller using a web browser to establish connectivity.
Based on HTTP
2. LED and DC Motor control with Capacitive Sensor
LCD display 16 × 2
Integrated with L293d
3.Contactless Digital Tachometer
->To measure speed of electric motor by the number of revolutions made in one min.
->The sensor used here - A white LED and a phototransistor,
->MCU and actuator is a display device, displaying the speed of the divice.
->The sensor senses the speed of the motor without actually being in contact with it by the principle of white light transmission and reflection and generates a signal. This signal is converted into an electric signal and fed to the microcontroller, which is programmed to calculate the speed in terms of number of motor revolutions in one minute. This speed is displayed on the LCD.
4.Water Level Indicator with Alarm
R5, R6 ,R7 – 100 ohm
Led – Red(LED3) , Green(LED1) , Yellow(LED2)
Metal Contacts – M1,M2,M3,M4.
->Indicate 3 levels of water stored in the tank: Low but not empty, half and full but not overflowing
->When there is no water in the tank, all the LEDs are off as an indication that the tank is completely empty.
->When water level increases and reaches M2, the contacts M1 and M2 get shorted as water acts as a conducting medium between M1 and M2.
->This will turn on the transistor Q1 and the Green LED starts to glow. As the water level continues to rise and reaches half the tank, M3 will come into contact with water and receives a small voltage from M1.
->As a result, Q2 is turned on and Yellow LED will glow. When the water in the tank rises to full tank, M4 is also shorted with M1 and both Q3 and Q4 will turn on.
->The Red LED glows and also an alarm is made by the buzzer as an indication that the tank is full and the water pump or motor can be turned off.
5.Light detector using LDR
When light falls on the LDR, LED stays off and when light stops falling on the LDR, the LED glows.
Can be done in two ways - using OP-AMP or just transistors
6.Smart Cane for visually Impaired
Battery and connector
DC male power jack
->The cane can automatically detect the obstacle in front of the person and give them a feedback response by vibrating the walking stick and giving a warning sound.
->Using ultrasonic sensor for detecting obstacles
->There are mainly three blocks behind it: input, controller, and output.
->The input consists of an ultrasonic sensor that is capable of detecting obstacles in front of it at a range of up to 400cm.
->It is interfaced to a controller: which determines if an obstacle is too close to the cane and triggers the output if it is.
->The output consists of a vibration motor to provide haptic response and a buzzer.
7.Textable lights communication through led's
String lights - Christmas lights
Backend: Firease, Twilio, Zapier
Setting up a backend and stay connected to the network to be able to communicate through text messages which are displayed by glowing LED's at the respective alphabe on the lights sign board.
LED - Red, Green, Generic
->Our skin changes conductivity depending on many different things, called Electrodermal activity (EDA).
->Based on certain baseline questions and then mob=ving on to questions where a person can lie about are asked, whose responses can then be compared to the baseline for detection.
->We need to plot the activity response in terms of a graph for checking the response - like when you lie you are nervous and there might be a spike which differentiates.
9.Proximity Sensing Robot
7seg LED display
This creature senses when you are nearby or when you pick it up and responds to that like blinking , glowing more etc.
10.Maze Solving Bot
HC-06 Bluetooth Serial Pass-Through Module Wireless Serial Communication
TCRT5000 4CH Infrared Line Track Follower Sensor Module
SparkFun SparkFun RedBot Sensor - Line Follower
ZX03 (based on TCRT5000) Reflective Infrared Sensors (Analog output)
Continuous rotation Servo
Battery n holder
Bot to try finding how to get out of a maze in the shortest and fastest way.
11.Obstacle avoiding bot
KIT 2WD CHASSIS
A self driving robot that can detect and automatically avoid obstacles that it hits or gets in its way.
12.Blowing an LED on/off
How to turn an LED on when you blow air into the sound sensor
MCU, Microphone Amplifier and resistors and cables req
13. Wearable for the visually impaired
Female, Male header
Detecting the nearby obstacles with the help of ultrasonic waves and notify with the help of vibration motor and buzzer.
14.Air quality monitoring device
If leds glow GREEN - Safe air quality
If leds glow RED - Danger
If leds glow BLUE - Need to take care
15.Step Motor based robot to carry small things
Draw route on a web based map, making the robot carry your things to the destination.
Need: Motor controller, Step motor car, ultrasonic sensor, MCU